Aggro Yards - The aggro radius of your target.

Aggro Yards
Aggro Yards is an addon which displays the approximate aggro radius of your target. This addon does only basic "pen-and-paper" calculations to determine the radius based on target level and player level and other minor factors.

To gauge the distance you must use your various spells as reference, because unfortunately, it is currently impossible to determine your distance to a mob. In most cases, the radius displayed is a little larger so you get a bit of a margin when estimating distances.

Features

Estimates current target's aggro radius

Only works on targets that will attack you

Frame hides when you enter combat

If you lose the frame, use /aggroreset to set it to an on-screen position

Since I have made this addon I have used it all the time. It is easily integrated into any UI and very useful.